using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(\d\d\d\d)(\d\d)(\d\d)_(\d\d)(\d\d)(\d\d)(\S+)";
string substitution = @"$1-$2-$3_$4.$5.$6$7";
string input = @"
20220716_165615-IMG_1234.jpg
20220717_102742-IMG_1235.jpg
20220717_193212-IMG_1236.jpg";
RegexOptions options = RegexOptions.Multiline;
Regex regex = new Regex(pattern, options);
string result = regex.Replace(input, substitution);
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx